Exponent Range: to+ above minimum exponent Output results in HTML format Output results in text-only format Output results in plain-text format Show full details (current assignment, history, LL residues) Include full ECM history (every "NF-ECM" result, slow) Include ancient history logs (1997-2007, slow) Include expired assignments Show software version in historyGet statusMnStatusDetails131859703Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 2000000B2 = 1540839300 PRPStatusDateUserResidueShiftTypeBaseVerified2024-07-19curtisc437CEC9880CF054811869080013 HistoryDateUserTypeResult2024-07-20Luke DurantCERTPRP CertificationCERT proof power = 8Proof certified good2024-07-19curtiscC-PRP437CEC9880CF0548PRP proof power = 8PRP: VerifiedProof certified good2024-06-25Luke DurantNF-PM1B1=2000000, B2=15408393002023-04-06ChuckNFno factor from 2^76 to 2^772023-04-01La GüiraNFno factor from 2^75 to 2^762022-12-27SRBaseNFno factor from 2^74 to 2^752021-07-20SRBaseNFno factor from 2^73 to 2^742020-11-23SRBaseNFno factor from 2^72 to 2^732016-01-10PascalBieriNFno factor from 2^71 to 2^722015-12-26PascalBieriNFno factor from 2^70 to 2^712013-01-26VictordeHollanderNFno factor from 2^69 to 2^702012-09-30VictordeHollanderNFno factor from 2^68 to 2^692012-09-30VictordeHollanderNFno factor from 2^65 to 2^682010-11-16Torchwood InstituteNFno factor from 2^64 to 2^652010-06-03OS1NFno factor from 2^63 to 2^64